Updates to ChatGPT: You can now choose between “Auto”, “Fast”, and “Thinking” for GPT-5. Most users will want Auto, but the additional control will be useful for some people. Rate limits are now 3,000 messages/week with GPT-5 Thinking, and then extra capacity on GPT-5 Thinking mini after that limit. Context limit for GPT-5 Thinking is 196k tokens. We may have to update rate limits over time depending on usage. 4o is back in the model picker for all paid users by default. If we ever do deprecate it, we will give plenty of notice. Paid users also now have a “Show additional models” toggle in ChatGPT web settings which will add models like o3, 4.1, and GPT-5 Thinking mini. 4.5 is only available to Pro users—it costs a lot of GPUs. We are working on an update to GPT-5’s personality which should feel warmer than the current personality but not as annoying (to most users) as GPT-4o. However, one learning for us from the past few days is we really just need to get to a world with more per-user customization of model personality.

We’ve scored highly enough to achieve gold at this year’s IOI online competition with a reasoning system — placing #6 when ranked with humans and #1 when ranked with other AIs. In just a few weeks: • 2nd at AtCoder • Gold medal-level at IMO • Gold medal-level at IOI

A few GPT-5 updates heading into the weekend: - Now rolled out to 100% of Plus, Pro, Team, and Free users - We’ve finished implementing 2x rate limits for Plus and Team for the weekend; next week we’re rolling out mini versions of GPT-5 & GPT-5 thinking to take over until your limits reset - GPT-5 thinking and GPT-5 pro now in main model picker - GPT-4o is now also available to Plus and Team users. To use it across platforms, go to settings on ChatGPT web and toggle on “show legacy models.”

We just launched GPT-5! There has been an unbelievable amount of safety work that went into this model, from factuality, to deception, to brand new safety training techniques. More details and plots in the 🧵

AMA with @sama + some members of the GPT-5 team Tomorrow 11am PT.

GPT-5 has 4 new chat personalities: Cynic, Robot, Listener, Nerd. Find them in Customize ChatGPT in settings. Research preview. Text-only. Opt-in. Change anytime. Written by Robot in GPT-5.

when you get access to gpt-5, try a message like "use beatbot to make a sick beat to celebrate gpt-5". it's a nice preview of what we think this will be like as AI starts to generate its own UX and interfaces get more dynamic. it's cool that you can interact with the synthesizer directly or ask chatgpt to make changes!

GPT-5 is here. Rolling out to everyone starting today.

wen GPT-5? In 10 minutes.

LIVE5TREAM THURSDAY 10AM PT